Continuously sensing of water temperature in a lake using acoustic tomography method. Issue 3 (4th March 2022)

• Record Type: Journal Article
• Authors: Huang, Haocai; Xie, Xinyi; Xu, Shijie; Guo, Yong; Liu, Shuo; Zhu, Min; Hu, Zhengliang; Xu, Pan; Li, Guangming
• Is Part Of: Remote sensing letters. Volume 13:Issue 3(2022)
• Page Start: 219
• Page End: 225
• Publication Date: 2022-03-04
• Subjects: Remote sensing -- Periodicals; Remote sensing; Periodicals; 621.3678
• DOI: 10.1080/2150704X.2021.2017506
• Languages: English
• ISSNs: 2150-704X

Abstract

ABSTRACT: Continuously sensing of water temperature is of critical importance to water environment, fluid dynamic and water resources researches. Coastal acoustic tomography (CAT) is a remote sensing technique in spatial temperature distribution estimating and has been widely used in many coastal regions. Continuous observations of water temperature in small-scale waters with distance less than 1 km are seldom conducted, as it is difficult to get high-resolution observation results. Here, a horizontal temperature field within 300 m distance was mapped in a sound transmission experiment with three 50 kHz CAT systems. The maximum inversion error temperature for the horizontal temperature field was 0.09°C. The root-mean-square error between the CAT-observed and range-averaged temperature that were calculated from one-way travel time data along three transmission paths were 0.03°C, 0.028°C and 0.043°C, respectively. The obtained results confirmed that CAT can be used in recovering the horizontal distributions of water temperature fields in lake.